The harmonics that are masked by noise can be deduced from the unmasked harmonics (red box in Fig. REF ). [1]}, [2]} proposed to model the peak-valley structure of the harmonics on spectra to detect the pitch. The pitch candidates are set first, and the integral of the multiple locations is taken as the significance \(Q_{t,f_c}\)  of each candidate \(f_c\) ,
\(Q_{t,f_c}=\sum _{k=1}^{\text{8000}/f_c}(\frac{1}{\sqrt{k}}\cdot {|S^{\text{WB}^{\prime }}_{t,kf_c}|}^{0.5}-\frac{1}{\sqrt{k}}{|S^{\text{WB}^{\prime }}_{t,(k-\frac{1}{2})f_c}}|^{0.5})\) 
